1. Experimental designs

2. Between- / Within-subjects Between-subjects design Each partcipant takes part in 1 experimental condition Analysis of differences between groups of participants from different conditions Within-subjects design Subjects take part in all conditions Analysis of differences of results from same participants over different conditions

3. Experimental research as conclusive research Conclusive Research Descriptive Causal Experimentation Field Experiments Laboratory Experiments

4. Preexperimental designs One-Group After-Only One-Group Before-After Nonequivalent posttest-only

5. Validity in experimentation Internal validity Is effect CAUSED by manipulation of independent variable? Rival hypothesis / extraneous variables External validity Generalization beyond experimental situation

6. Randomized Two-Group Design

7. Before-After Two Group Design

8. Solomon Four-Group Design

9. 2  2 Factorial Design

10. Repeated Measures

11. Static-Group Comparison Design

12. Pretest-Posttest Nonequivalent Control Group Design

13. Regression-Discontinuity Design

14. One-Group Pretest-Posttest Design

15. Interrupted Time-Series Design

16. Replicated Interrupted Time-Series Design

17. Laboratory versus Field experiments LABFIELD EnvironmentArtificialRealistic ControlHighLow Reactive errorHighLow Demand artifactsHighLow Internal validityHighLow External validityLowHigh TimeShortLong